ACCUMULO-1795 make the default hadoop version consistent to avoid confusion
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT
ACCUMULO-1939 Fix ConcurrentModificationException in MAC
ACCUMULO-1932 Add in a configuration for the Accumulo user, and then make sure we exec the magitator as that user so we
don't restart the master and gc as root.
Merge branch '1.5.1-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-1937 decrease log severity for expected case of a tablet no longer being in the unopened set at the moment it is being loaded
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-1941 Fix TabletIT test
ACCUMULO-1943 Replace module.xsd in the test jar so randomwalk has access to it.
Merge branch '1.5.1-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-1940 do not expose a new tablet to the memory manager until after it is online
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT
ACCUMULO-1940 do not expose a new tablet to the memory manager until after it is online
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-1556 Clarify initialization error for used fs

The Initialize class now generates clearer and more informative
error messages if an initialized instance is discovered. The
messages vary depending on whether instance.dfs.uri is used. The
values of instance.dfs.uri and instance.dfs.dir are also logged.
ACCUMULO-1946 Note in the README about dfs.datanode.synconclose.
Merge branch '1.5.1-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge branch '1.6.0-SNAPSHOT'